The malonic ester synthesis is a method for preparing carboxylic acids from alkyl halides. for each of the following carboxylic acid products, draw the structure of the alkyl bromide that would be used in its synthesis.

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.